Koloa, HI Political Map | Democrat & Republican Areas in Koloa

By the BestNeighborhood data science team. Last updated May 2026.

Koloa leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.

 

About 56% of adults in Koloa typically vote, below the U.S. average of about 62%. Among adults in Koloa, ~35% vote Democratic, ~21% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.

How Koloa compares

Among cities within 25 miles, Koloa leans more Democratic than 19 of 23 neighbors.

Politically, Koloa sits close to the rest of Hawaii.

Politics vary noticeably by neighborhood within Koloa. The southwest side is the most Democratic-leaning (D+32) and the southeast side is the least Democratic-leaning (D+20), a spread of about 12 points.

Why Koloa leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Koloa, not a ranked or complete list of what matters most.

Areas with high college attainment vote Democratic. About 34% of adults in Koloa hold a bachelor's degree, about 5 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 36% of adults in Koloa have never been married, above 89% of cities.

Homeownership and voter turnout

Places with renter-heavy households tend to turn out at a lower rate; Koloa, HI sits in the bottom tenth nationally on this measure.

Why turnout in Koloa looks the way it does

Renters vote less often than owners. About 40% of households in Koloa rent, about 15 points above the U.S. average of 25%. Strong routine healthcare access lines up with higher turnout, and Koloa sits in the top quarter on routine-care measures. Crowded housing lines up with lower turnout, and about 8% of homes in Koloa have more than one occupant per room, above 94% of cities. Learn more about the findings and methodology on the political spectrum map.

Sources and methodology

Precinct-level voting records used to fit the model come from Hawaii Office of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.

Modeling and analysis by the BestNeighborhood data science team. Some land-use inputs for Hawaii, including walkability and the environmental-justice index, are estimated rather than measured, so the figures here carry added uncertainty. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.